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MS51957-8B
2-56X5/8 MS51957-B Phil Pan M/S Coarse Full Thread 300 Series S/S DFAR Black Ox
Description
Fastener Length: 5/8", Thread: 2-56, Thread Length: 5/8", black oxide
Specifications
| Country of Origin | USA |
|---|---|
| Diameter | #2 |
| Drive | Phillips |
| Drive Type | Phillips |
| Fastener Length | 0.594 inches minimum and 0.625 inches maximum |
| Finish | Black Oxide |
| Full Size | #2-56 x 5/8 |
| Head Angle | 100 ? |
| Head Diameter | 0.155 inches minimum and 0.167 inches maximum |
| Head Height | 0.053 inches minimum and 0.062 inches maximum |
| Head Style | Pan Head |
| Head Type | Pan |
| Industry Standards/Certification | AN507 |
| Internal Drive Style | Cross recess type 1 |
| Length | 5/8 |
| Material | CRES |
| MilspecPart | MS51957-B |
| Min. Tensile Strength (psi) | 80000 pounds per square inch |
| Nondefinitive Specification/Std Data | 3 type and 9c style |
| Screw Material | Steel corrosion resisting |
| Screw Material Specification | Qq-s-763,300 series fed spec single material response or 66,300 series fed std single material response or comp 16-18 or 18-8 assn std single material response |
| Size | 2-56 |
| Thread Class | 2a |
| Thread Diameter | 0.086 |
| Thread Direction | Right-hand |
| Thread Length | 0.558 inches minimum and 0.625 inches maximum |
| Thread Qty | 56 |
| Thread Qty Per Inch (tpi) | 56 |
| Thread Series Designator | UNC |
| Thread Size | 2 |
| Thread Type | UNC |
| Threads Per Inch | 56 |
| U.O.M. | Imperial |
| Weight | .005 lb |
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- NAS1100-02-10 NAS #2-56 · 5/8 in · Pan Head · Steel
- NAS1100E02-10 NAS #2-56 · 5/8 in · Pan Head · Iron
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Catalog data updated 2026-07-05. Report a data error